Gas-washing apparatus



(No Model.)

E. LEDIG. GAS WASHING APPARATUS. No. 407,936. Patented July 30, 1889,

//v VENTOI? A TTOR/VE J .Mw n hm Wzuhington. n. r.

N. PEYERs Plv' UNITED STATES PATENT OFFICE.

ERNST LEDIG, OF OHEMNITZ, SAXONY, GERMANY,v ASSIGNOR OF ONE-HALF TOBRUNO TERNE, OF PHILADELPHIA, PENNSYLVANIA.

GAS-WASHING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 407,936, dated July 30,1889.

Application filed August 27, 1883. Serial No. 283,910. (No model.)

Patented in Germany October 28, 1884, No. 31,196, and

January 11,1887,N0.40,070-

To 0. whom it may concern:

Be it known that I, ERNST LEDIG, of Chemnitz, in the Kingdom of Saxonyand Empire of Germany, have invented certain new and useful Improvementsin Gas-Vashing Apparatus, (which was patented to me in Germany byLetters Patent Nos. 31,196 and 40,070,

dated, respectively, October 23, 1884:, and J anuary 11, 1887,) of whichthe following is a specification.

This invention relates to an improved apparatus for washing or scrubbingilluminating-gas, so as to remove the ammonia contained in the same; andthe invention consists of an apparatus for washing illuminating-gas,which comprises a closed casing formed of a superimposed section havinggaschannels, a gas inlet and outlet, verticallyreciprocating boxeshaving closely-arranged parallel plates, and mechanism for impartingreciprocating motion to said boxes, as will be fully describedhereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 represents a Verticallongitudinal section of my improved gas-washing apparatus on line a; 00,Fig. 3. Fig. 2 is a vertical transverse section of the same on line y 1Fig. 3; and

Fig.3 is a horizontal section on line 2 a, Fig. 1.

Similar letters of reference indicate corresponding parts.

Referring to thedrawings, A represents the casing of my improvedgas-washing apparatus, which is formed of a number of superimposedsections A, of oblong shape, of

which each is provided with two central ver: tical gas-channels a to,also of oblong crosssection. The sections A are filled with water nearlyto the edge of the gaschannels a a.

40 At the base of the apparatus is arranged the gas-distributing sectionA which is divided by a diagonal wall b into two parts, of which theupper part serves as the gas-induction chamber (1, while the lower partserves as the gas-eduction chamber e. The diagonal wall b is providedwith two vertical guide-tubes O C, which are surrounded by a verticaloasing 0 that is filled with water, so as to form a hydraulic seal forthe lower ends of the gas-conducting tubes K K, as shown in Figs.

1 and 2. The gas-conducting tubes K K eX- tend from the shortguide-tubes c 0 through the oblong gas-channels Ct 60', and areconnected at their upper ends by fixed bails or yokes K with thesuspension-rods i t" and a suitable motion-transmittin g mechanism atthe top of the apparatus A, which latter impartsvertically-reciprocating motion to the gas conducting tubes K K. Themotiontransmitting mechanismis composed of a link chain g, which ispassed over a suitable sprocket-wheel g, said link chain being connectedto the upper ends of the suspension-rods M. The shaft of thesprocket-wheel g is provided with a crank which is connected by apivotrod g with a crank-pin g on a gear-wheel which turns in bearings ofthe supportingstandards of the transmitting apparatus. The gear-wheel gmeshes with a pinion g, to which rotary motion is imparted by a pulley gon the shaft of the pinion and a belt applied to the pulley. Thegear-wheel g and the connecting-rod 9 applied to the cranks g gflimpartto the sprocket-wheel g a rotary reciprocating motion, and by the linkchain g a vertically-reciprocating motion to the, gasconducting tubes KK, as shown clearly in Fig. 1.

To each gas-conducting tube K and K is secured in each section A of theapparatus an oblong sheet-metal box Z Z, which are formed of ahorizontal top sheet and two vertical side sheets. These side sheetsform in each section of the apparatus, at both sides of thegas-conducting tubes K K, channels of 8 rectangular cross-section, whichare closed at the open lower ends by the water in said sections, whichforms a hydraulic seal for the sheet-metalv boxes Z Z. The boxes ll areprovided with a large number of sheetrmet-al 0 plates m, which arearranged closely to-each other parallel to the side walls of the boxes IZ, so as to form a large number of narrow passages between them. In eachsection of the apparatus are arranged sidewise of each 5 other two pairsof sheet-metal boxes Z Z, which are so arranged on the gas-conductingtubes K K that when the boxes of one tube are entirely submerged intothe water of the section the sheet-metal boxes of the other tube arelifted almost entirely above the level of the water in the section.When, therefore, the gas-conducting tubes, with their coupledsheet-metal boxes 1 1, receive an alternating up-and-down motion by themotion-transmitting mechanism described, it is obvious that thesubmersion and washing off of the plates in the boxes takes place atregular intervals, while the gas passes in a free and unobstructedmanner through between the plates, as the cross-sectional area of thepassages in each box is equal to that of the other box in the samesection of the casing.

The gas which is introduced into the lower part of the apparatus iscompelled to pass in upward direction from the lower to the upper part,so that it takes its course successively through the channels CL 0. andthe passages between the plates of the sheet-metal boxes 1 Z of all thesections A. As the sheets are kept moist by the repeated submersion intothe water in the sect-ions of the apparatus, the ammonia-gas'containedin the illuminatinggas is thereby washed out of and absorbed by thewater in said sections. When the gas has arrived in the uppermostsection, it is returned eduction-chamber e and conducted oif fromthesame perfectly free of ammonia-gas. As the weight of the submergedboxes is reduced during the submersion, while the unsubmerged boxes areincreased in Weight, owing to the water adhering to the plates of thesam e, it is necessary to apply to the crank-shaft of the sprocket-Wheelg a balance-Weight g, which is applied in such a manner that it does notact on the crank-shaft when vertically above the same in theintermediate position of the alternating rising and falling tubes K K,but that it exerts only an action on the crank-shaft while the tubes K Kare in their lowered positions, in which the balance-weight serves tobalance the submerged boxes and their gas-conductin g tube.

The water used for washing the gas is conducted into the apparatusthrough a funnel r to the hydraulic seals of the suspension-rodstt'fland from the same, through a connectingtube 8, into the uppermostsection of the apparatus. The water is then conducted from section tosection by means of overflow-pipes t, which are located'at the outsideof the apparatus, the overflow-pipes being arranged in such a mannerthat the specifically heavier solutions of ammonia salts are drawn oftfirst. From the lowermost section of the apparatus the water used forwashing is conducted into the chamber which is formed by the wall 0 ofthe hydraulic seal of the tubes K K, and is then conducted off throughthe valved dis- 7 charge-pipe u.

In each section of the apparatus is arranged a discharge-faucet v, forthe purpose of removing the dirt collecting at the bottom of eachsection.

The supply of water is regulated in proportion to the quantityof gas tobe washed so that there is no possibility for the escape of gas.

If the apparatus is once in regular operation, it is hardly necessary toever open the same, as the choking of the same is not possible if asuflicient quantity of water is constantly supplied.

From time to time it is necessary to draw off the dirt deposited at thebottoms of the sections, so as to keep the apparatus in good workingorder. If desired, the apparatus may be cleaned from time to time byforcingv an extra. quantity of water through the same.

The advantages of my improved gas-scrub,

her are, first, that the ammonia contained in the gas obtained from theretorts is entirely removed from the same; secondly, that acomparatively small quantity of water is required for washing; thirdly,that a large quantity of ammonia-water of from 6 to 7 Baum is obtained;fourthly, that little or no increase of pressure in the apparatus takesplace, and, fifthly, that the apparatus takes up comparatively smallspace, as all the parts are very compactly arranged relatively to eachother.

Having thus described my invention, Iclaim as new and desire tosecure byLetters Patent- 1. The combination of a closed casing comprising anumber of superimposed sections for containing water, said casing beingprovided at its lower end with inlet and outlet chambers for the passageof gas, each of said sections having two vertical gas-channels,gas-conducting tubes "passing through said vertical gas-channels off thesections and opening at their lower ends into one of said chambers,means for vertically reciprocating said tubes, and boxes attached tosaid tubes, said boxes being provided with a series of plates,substantially as set forth.

2. The combination ofa closed casing comprising a number of superimposedsectionsfor containing water, said casing being provided at its lowerend with inlet and outlet chambers for the passage of gas, each of saidsections having two vertical-gas-channels, gas-conducting tubes passingthrough said vertical gas-channels of the sections and opening at theirlower ends into one of said chambers, water seals at the lower ends ofsaid tubes, means for vertically reciprocating said tubes, and boxesattached to said tubes, said boxes being provided with a series ofplates, substantially as set forth.

3. The combination of a closed casing comprising a number ofsuperimposed sections for containing water, said casing being providedat its lower end with inlet and outlet chambers for the passage of gas,each of said sections having two vertical gas-channels, gas-conductingtubes passing through said Vertical gas-channels of the sections andopening at their lower ends into one of said chambers, boxes attached tosaid tubes, said boxes being provided with a series of plates,suspension-rods for said tubes, a link chain connected to said rods, asprocket-wheel for said link chain, and a crank-motion forimpartingoscillating motion to the sprocket-wheel and verticallyreciprocatingmotion to the gas tubes and boxes, substantially as set forth.

4. The combination of a closed casing comprising a number ofsuperimposed sections for containing water, said casing being providedat its lower end with inlet and outlet chambers for the passage of gas,each of said sections having two Vertical gas-chambers, gas-conductingtubes passing through said Vertical gas-channels of the sections andopening at their lower ends into one of said chambers, boxes attached tosaid tubes, said boxes being provided with a series of plates,suspension-rods for said tubes, a link chain connected to said rods, asprocket-wheel for said link chain, a crank-motion for impartingoscillating motion to the sprocket-wheel and vertically -reciprocatingmotion to the gas tubes and boxes, and water seals for saidsuspension-rods, substantially as set forth.

In testimony that I claim the foregoing as my invention 1 have signed myname in presence of two subscribing witnesses.

' E. LEDIG.

Witnesses:

ATTWILL SCHILLING, WILLIAM R. MATTHES.

